use versioned api in kube-proxy

pkg/proxy/types.go

@@ -19,8 +19,8 @@ package proxy
 import (
 	"fmt"
 
+	"k8s.io/api/core/v1"
 	"k8s.io/apimachinery/pkg/types"
-	api "k8s.io/kubernetes/pkg/apis/core"
 )
 
 // ProxyProvider is the interface provided by proxier implementations.
@@ -51,7 +51,7 @@ type ServicePort interface {
 	// ClusterIPString returns service cluster IP in string format.
 	ClusterIPString() string
 	// GetProtocol returns service protocol.
-	GetProtocol() api.Protocol
+	GetProtocol() v1.Protocol
 	// GetHealthCheckNodePort returns service health check node port if present.  If return 0, it means not present.
 	GetHealthCheckNodePort() int
 }